在低毒瘤微环境中非编码RNA的风景
Lianfeng Gong1, Chuanxin Zou1, Haixia Zhang1
1School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou 434023, China.
Genes
|February 26, 2025
概括
缺氧固体瘤涉及非编码RNA (ncRNA),包括长非编码RNA (lncRNA) 和圆形RNA (circRNA). 这些分子是癌症进展的关键,并具有作为生物标志物和治疗点的潜力.
科学领域:
- 分子瘤学分子瘤学
- 癌症生物学 癌症生物学
- 在RNA治疗方面,RNA疗法.
背景情况:
- 固体瘤经常表现出低毒的微环境,影响癌症的进展.
- 非编码RNAs (ncRNAs),包括长非编码RNAs (lncRNAs) 和圆形RNAs (circRNAs),在癌症转录组中发挥关键作用.
- 新出现的证据强调了ncRNAs在缺氧瘤区域中的重要性.
研究的目的:
- 在低氧瘤微环境中对lncRNAs和circRNAs的最新研究进行全面审查.
- 强调这些ncRNAs在癌症诊断和治疗中的临床意义.
- 探索它们作为有效癌症治疗的生物标志物和治疗点的潜力.
主要方法:
- 对最近研究的文献综述,重点关注缺氧瘤中的lncRNAs和circRNAs.
- 对lncRNAs和circRNAs的生物功能和调节作用的分析.
- 在基于RNA的治疗和液体活检中对临床应用的评估.
主要成果:
- lncRNAs和circRNAs在低氧瘤微环境中表现出重要的调节功能.
- 这些ncRNAs显示出作为癌症诊断的有前途的生物标志物的潜力.
- 它们也代表了基于RNA的新型癌症疗法和非侵入性诊断的可行目标.
结论:
- lncRNAs和circRNAs是缺氧瘤发育和进展中的关键参与者.
- 它们独特的特性使得它们在癌症管理中的临床应用中具有价值.
- 对这些ncRNA的进一步研究可能会导致开发有效的向疗法.
相关概念视频
lncRNA - Long Non-coding RNAs
8.5K
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
8.5K
MicroRNAs
3.0K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.0K
Regulation of Angiogenesis and Blood Supply
2.5K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.5K
Types of RNA
5.6K
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...
5.6K
Adaptive Mechanisms in Cancer Cells
5.7K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.7K
Tumor Progression
6.2K
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
6.2K


